Shiya Wanxin Tools Factory , http://www.zjspiritlevels.com
The Automatic Identification System (AIS) is composed of shore-based (base station) facilities and shipborne equipment. It is a new type of network technology, modern communication technology, computer technology and electronic information display technology. Digital navigation aids and equipment.
The Automatic Ship Identification System (AIS) was developed from the enemy aircraft identification device of the ship. In conjunction with the Global Positioning System (GPS), the ship's position, speed, heading rate and heading are dynamically combined with the ship's name, call sign, draught and dangerous goods. The static data of the ship is broadcasted by the VHF channel to the ships and shore stations in the nearby waters, so that the neighboring ships and the shore stations can timely grasp the dynamic and static information of all the ships in the nearby sea surface, and can immediately call and coordinate with each other and take necessary avoidance actions. Great help for ship safety.
Purpose of the AIS (IALA Navigation Guide):
1. Identify the ship;
2. Help track the target;
3. Simplify and facilitate the exchange of information;
Provide auxiliary information to avoid collisions;
4. Reduce verbal mandatory ship reports
The significance of building an AIS system:
1. Will reduce investment in VTS and VHF-DSC construction;
2. The social benefit of AIS is to avoid collisions between ships and reduce human life and property losses;
3. Solved the big problem of ship-shore information transmission, realizing ship-shore information networking and ship information sharing;
4. Promote transportation informationization projects.
The main functions of AIS:
1. Ship collision avoidance: Ships that are installed in the AIS shipyard to sail in the waters of the Yangtze River estuary can automatically identify and exchange information.
2. Maritime management: continuous monitoring and management of static and dynamic information on ship navigation.
3. Enhanced VTS function: AIS information is connected to the VTS system to improve the identification accuracy and information of the ship and extend the traffic management scope of the Yangtze River estuary.
AIS system service content:
1: services provided for the ship;
Water traffic dynamics and traffic guidance;
Navigational warnings, navigational notices and traffic control information;
Factors affecting the navigation of the ship, meteorological, hydrological, navigational aids and other information;
Respond to the help of the ship's platform.
2: Services for the maritime sector
Ship dynamic and static information;
Relative to the position of the channel;
The location and intention of the surrounding ship;
Issue navigational warnings, navigational notices, and traffic control information.
3: Social Information Service
It provides services to ships, shipping companies, shipping authorities, governments, ports, ecology, rescue, marine and atmospheric, research and statistics, public access, VTS, counter-terrorism, etc. through C/S and B/S models.